feat: 支持系统账号批量操作

- 新增账号批量删除和批量重置密码接口及结果返回

- 用户列表增加批量操作工具栏与结果提示

- 账号删除切换为逻辑删除语义

easyflow-ui-admin/app/src/locales/langs/en-US/sysAccount.json

@@ -29,6 +29,20 @@
   "resetPassword": "Reset Password",
   "resetPasswordConfirm": "Reset this account password to 123456? The user will be required to change it on next login.",
   "resetPasswordSuccess": "Password has been reset to 123456 and must be changed on next login",
+  "batchSelectedCount": "{count} selected",
+  "batchToolbarHint": "Batch actions are available for selected accounts",
+  "batchActionSelectRequired": "Please select at least one account",
+  "batchActionFailed": "Operation failed. Please try again later.",
+  "batchDelete": "Batch Delete",
+  "batchDeleteConfirm": "Delete the selected {count} accounts? Protected administrator accounts will be skipped and returned as failures.",
+  "batchDeleteSuccess": "Batch delete completed. {count} accounts were removed.",
+  "batchDeletePartialSuccess": "Batch delete completed. {successCount} succeeded and {errorCount} failed.",
+  "batchDeleteAllFailed": "Batch delete failed",
+  "batchResetPassword": "Batch Reset Password",
+  "batchResetPasswordConfirm": "Reset the selected {count} accounts to 123456? Users must change it on next login, and protected administrator accounts will be skipped.",
+  "batchResetPasswordSuccess": "{count} account passwords have been reset",
+  "batchResetPasswordPartialSuccess": "Batch password reset completed. {successCount} succeeded and {errorCount} failed.",
+  "batchResetPasswordAllFailed": "Batch password reset failed",
   "importTitle": "Import Users",
   "importUploadTitle": "Drag the Excel file here, or click to select a file",
   "importUploadDesc": "Only .xlsx / .xls files are supported. Import only creates users and duplicate accounts will fail.",